Gun-sighting device.



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- GUN SIGHTING DEVICE.

AIPLIUATIBH FILED 00!.15, 1910.

Patented Oct. 15, 1912.

2 SHEFT8 8HEBT 1.

H. KORRUDI.

GUN SIGHTING DEVICE.

APPLICATION IILBD 00115, 1910.

L I I] I v" 1 2 A Patentd Oct. 15,1912.

2 SHEETS-SHEET 2.

f 2 E.\\ H P partly in section of Fig: 1:- Fig. '0

UNITED STA ES PATENT ()FFICE.

HEINRICH KORRODI, OF-BERN-KIRCHENFELD, SWITZERLAND, ASSIGNOR T0 KRUIPP AKTIENGESELLSCHAFT, 0F ESSEN ON-THE-RUHR, GERMANY.

GUN-SIGHTING DEVICE.

Specification of Letters Patent.

Patented Oct. 15,1912.

Application filed October 15, 1910. vSerial No. 587,260.

To all whom it may concern:

Be it known that I, I'IEIXIKICH Kounoni, a citizen of Switzerland. and a resident of Bcrn-Kirchenield, Switzerland, have invented certain new and useful ln-.prove ments in Gun-Sighting Device of which the following is a specification.

The present invention relates to gun sighting devices, in which the sight line, for the purpose of eliminating the efl'ect ol the inclined position of the wheels, maybe swung about an axis, and may be laid parallel to the direction given the gun axis; and aims at the production of a sighting device of this kind, which of a particularly simple and concise construction. This object is, in accordance wlth the present. inventioinattained by letting the oscillating axis 'oithe sight-line coincide with the pivot axis of a gear, intended for setting the sight in .the firing angle corresponding to the range.

An embodiment of the invention is shown on the drawing as applied to a'recoil gun carriage, having an attachment sighting device, in whichthe driving gear, used for setting the sight in the firing angle corresponding to the range, is connected with the driving member of the gun elevating gear mechanism by means of shafting. ltccoil gun carriages of this kind have for instance, been described in the Patent No. 800,819.

In the drawing, Figure 1 shows a rear view, partly in section, of the attzu-luncnt sighting device WlthflSSOCltltOd parts of the 2 is a side view,

is a secfon on line 3--3 of Fig. 2, seen from the right; and Fig. is a detail of the gear intended for setting the firing angle correrecoil gun carriage; Fig.

spending to the range.

The gun barrel is mounted in the usual manner on the cradle B, which rests with its horizontaltrunnions (not shown) in bearings on the carriage proper U and may be oscillated thereon. Between cradle and carriage is a screw elevating gear, which can be operated by means ottwo hand wheels D and 1!], Of these two hand wheels, mounted on the carriage L", and the other one, D, on a projection I" from a bracket F, carrying the attachment sight (levie -and being rigidly attached to the cradle ll. This bracket is made hollow and placed on one side near the breech end A. of the gun,

independent of each other. the one l) or and carries the elevating sleeve G in which is guided an arcuate sight-bar H, having the telescope J -on top, which sleeve is 50 mounted that itcan oscillate. for the purpose of eliminating the etl'cct of the inclined position of the carriage wheels. To a complish this, the arm F is provided with an arcuate guide-groove f, running in a plane at right angles to the gun axis; and the elevating sleeve G is provided with a guiding rib 5 correspondingly shaped to, and running in the groove The device is moreover so arranged, that the oscillating axis of the elevatin sleeve, coinciding. with the guide-groove f-, is'parallel-to the'gnn axis. In order to make the connection between the elevating sleeve G and the bracket F secure, a bayonet lock is provided (see Figs. 2 and 3) in which the elevating sleeve G is provided with a boss g coaxial with its os-' cillat'ing axis, having diametrically oppositely placed annular collars g at the edge of the boss g"; and by supplying the bracket F with dianictrically oppositely inter ted annular collars f that fit the boss an engage behind the collars g in the locked,

osition. The two interruptions g (Fig. 3) between the collars 9, permit of the in sci-lion of the collars 1" into the boss when the elevating sleeve G is turned about 90" to the mean position represented in the drawing. lYith the elevating sleeve G in its working position (as shown on the drawing) a worm -K is in mesh with the toothed segment 5/ of the guiding rib 9?: so that the elevating sleeve G by turning the worm K, which is mounted in the bracket F. may be oscillated sulliciently to counteract the etlcet ot' the inclination of the wheels. shaft M is mounted in the bracket F. coaxial with the circular guide-groove f, the end of this shaft nearest to the sight bar H. carrying a spiral gear In, which projects into the bored out space y (Fig. 2) coaxial with the boss 9 and meshes with the toothed are k of the sight-bar H. The form of the spiral to which the actuating rib m of the spiral gear is laid out (see Fig. 4) ie chosen to have a shape of the least possible deviation.

From the latter wheel ball-jointed shat'ting leads to the hand wheel D of the gun elevating gear. This shatting consists of a shaft P rigidly connected to the bevel-wheel P; a shaft D rigidly connected to the hand Wheel D, and an intermediate shaft Q which connects with shaft P through a ball-joint R, and with shaft D through a ball-joint R The device is then. operated by turning the hand Wheel D, whereby not only the gun A is, elevated, but also the sight-bar H is set at the same angle, but op osite to the gun, by means of the shafting R, Q, R, P together with the gears P, N and m, E of the just mentioned'shafting, the shaft P and the balhjoint R are situated entirely within the hollow space of the bracket F, the greater part of its:

and the shaft Q, for length.

The setting of the sight line at a firing angle corresponding to the range is accomplished by turning the spiral gear rt-Flay means of the hand Wheel'D, shaftingD R, Q, R, P and the bevel gear P, N, to ad.- justthe position of the sight'bar H, carrymg the telescope J, in regard to the velevating-sleeve G, an amount equal to the range. As the gun is simultaneously elevated, the same angle, but in the opposite direction to the sight bar H, the sight line will not change during the described operation. To lay the sight line on the target, is accomplished in usual manner by the use of the hand wheel E.

If in order to eliminate the influence of the inclined position of the wheels, the worm K is turned the elev'atin sleeve G. to ether with the sight-line will swing around the As the spiral axis of the spiral gear m gear m however, remains stationary in consequence of its constrained connection with the elevating gear, which stays unmoved, the angle between the si ht-line and the turning axis of the spiral gear will theoretically alter a little, on account of the movement that takes place between the teeth of the sight bar and the spiral ri'b m- This change in the angle is, however, practically. without any lnfluence 1n the accuracy of the setting of the sight-bar,-because of the nea ness in shape to a circle that is given to "the spiral rim m and consequently, at the comparatively small angle (never more th an 5 to "79)" required for eliminating the infiuence'of thev inclined position of the Wheels, the movement will be exceedingly small. j

By giving the arm F, which is rigidly con-v nected with the cradle B, a hollow shape, an essential advantage is attained, as the parts P R; Q of the shafting are partie ularly well protected, being situated in hollow chamber formed by the arm, so that they, for instance, are well secured against.

destruction fronithe enemys lire.'

The invention is evidently also suitable for such.guns vfliercthe gear m, for laying the .the influence of inclined Wheel sight line at an angle corresponding to the range, is operated direct by hand, instead of by means of a hand operating wheel D for elevating the gun. The advantageof using the present invention in this case, would at least be that the construction of the sighting device would be simple and compact.

I'claim 1. A sighting attachment having a sight bar, a uiding sleeve for said sightbar, a rotary riving gear engaging the sight bar for adjusting it relatively to said sleeve to correspond with the target distance and means for oscillating the sleeve tocliminate osition, the axis of said rotary gear coinciding with the axis of oscillating movement of said sleeve.

2. A sighting attachment having a toothed sight bar, a guiding sleeve for said sight bar, a rotary gearconstructed with spiral thread engaging the teeth of'the sight bar. for ad justing the sight bar relatively to said sleeve to correspond with the target distance and means for oscillating the sleeve to eliminate the influence of inclined wheel position, the axis of said rotary gearcoinciding with the axis of oscillating movement of said sleeve.

3. A gun carnage having an elevating mechanism for the gun barrel and a si liting attachment- .comprising a toothed sight bar, a guiding sleeve forsaid' sight bar, a

rotary gear for adjusting the sight bar relatively to the sleeve to correspond with the st-ructed with spiral thread engaging the .5 teeth of said'sightbar and having positive target distance, said rotary gear being con-- connect-ion' with said elevating mechanism,

1 and means for oscillating the sleeve to eliminate' the influence of inclined wheel position, the axis of said rotary gear coincidm with the axis of oscillating movement 0- said sleeve. f

4;. A gun-sightingdevicehavi g a gear for setting, the firing "angle to orrespond with the target distance and being mounted to permit its sight line to oscillate, for e1iminating the'influence of inclined wheel'position, about an axis that coincides with the axis of the setting gear; means to actuate the device to so oscillate, said sightin do vice being adjustable. parallel'to the jrection to be imparted to the axis of the gun bore; in combination with a hollow attachment arm upon which the sigh'tin *device and said gear are mounted and she ting extending through" said hollow arm and having driving connee'tionwith 'said gear.

5; A n-sighting device having a. gear for setting the firing angle, to. correspond with the target distance, and havin its sight-line adapted to oscillate for elimlnating the'infiuenee of inclined wheel position, about an axis that coincides with the axis. of the setting gear; means to actuate the device to so oscillate said sighting device having a toothed segment bar through which it is adjusted and said gear heing constructed with a spiral thread engagingthe teeth of said segment bar. constructed approximately in the form of a circle.

spend with the target distance and means for oscillating said sleeve to eliminate the influence of inclined Wheel position; and

shafting extending through said hollow arm I and eifecting positive connection between said rotary gear and said elevating mechanism, the axis of said rotary gear coinciding with the axis of oscillating movement of said sleeve. i

The foregoing specification signed at Bern, this 21th day of September, 1910.

H. KORRODI.

In presence of CARL Gnns'rnn, H. A. TIMER. 

